Fixed: USB Transfer Speed Is Slow

Fixed: USB Transfer Speed Is Slow

Wondershare Recoverit Authors

Oct 16, 2020 • Filed to: USB Recovery • Proven solutions


If you find your USB transfer speed slow, there are several ways you can fix the issue. Most of the time the error can be rectified with the Windows’ built-in tools itself. However, if the problem is severe, you need a third-party app that has been designed specifically for the purpose. That said, here you will learn about a couple of methods to improve the performance, typically the transfer speed, of your USB drive.

Part 1: Why Do USB Drives Transfer Data So Slowly?

To begin with, this is a relative question. If you bought a new piece and notice USB transfer speed very slow Windows 10 or Mac, the device itself might not be faulty. To confirm, you can check the version of the drive you received, i.e. if it is 2.0 or 3.0. The information can be found on the body of the drive or on the cover it was shipped in.

For reference, the transfer rate of USB 2.0 is 480Mbps (Megabits per second), whereas a USB 3.0 can send or receive data as fast as up to 5Gbps (Gigabits per second). There are many tools such as USB Flash Benchmark, SpeedOut, USBDeview, etc. that allow you to check the speed of your USB for free.

Therefore, before doubting the integrity of your flash drive, it is advisable to check if the speed you are getting is normal. In case you notice significant lethargy in the functioning of the device as compared to what you should get or were getting earlier, there could be a couple of reasons for that including:

Not particularly hardware, but the USB port might have malfunctioned or may have an obsolete driver. Isolating the issue post proper diagnosis, and then addressing it should fix the problem.

Since the transfers may take place from USB to your PC or vice versa, any issue with the source device may hinder the performance. Such problems may include bad clusters, virus infections, bad sectors, improper or incorrectly managed file systems, fragmented files, etc.

As it is with the source device, the target device could be faulty as well. In case your USB is the target device and it shows poor performance, it may have an incompatible file system, faulty file allocation table (FAT), or bad sectors. Detecting the problem(s), and fixing it/them should bring the device back to normal.

Depending on the cause of the trouble your flash drive has, the solutions may vary. Some of the most effective methods to resolve the issue include:

Method 1: Change the Port – The first thing you can try is, plug the drive to a different port. You can learn more about it here.

Method 2: Convert USB 3.0 from FAT32 to NTFS – This method requires you to recover your data from a faulty USB, save it to a separate storage media, and then use the procedure explained in Method 3 to convert FAT32 to NTFS to fix the issue with the drive. The detailed process to do this can be found here.

Method 3: Formatting the Drive – In this scenario, this method works in correlation with the previous one. Although not recommended, this solution helps most of the time. The process of formatting a USB drive can be found here.

Method 4: Update Drivers – As discussed above, obsolete drivers can also be the cause of poor USB performance, and updating them could do the trick. Detailed instructions can be found here.

Method 5: Optimization – Optimizing the performance of your USB stick is yet another way to resolve the problem with the least intervention. You can get all the details here.

Method 6: Check BIOS/Firmware for 3.0 – Sometimes the USB 3.0 option gets disabled in BIOS/UEFI. Possible reasons could be BIOS upgrades, unexpected shutdown, corrupt CMOS settings, weak CMOS battery, etc. The instructions on how to check the Firmware/BIOS and enable 3.0 can be found here.

Part 2: 6 Effective Methods to Improve USB Transfer Speed

Once you have noticed that the USB transfer speed slows on PC, it is now time to dive in and try all the possible solutions that could fix the problem. All those six troubleshooting methods are explained below in detail:

Method 1: Change the USB Port

If there was a malfunction on the port your USB is connected to, it is a good idea to disconnect the device from there, and plug it into a different port. In case you are using a desktop computer, it is advisable to connect the flash drive to any of the rear ports of the system case (usually referred to as the CPU).

If the computer is able to detect the USB, you can continue using it normally, and the issue with the culprit port is likely to be fixed automatically upon the next Windows restart.

Method 2: Convert USB 3.0 from FAT32 to NTFS

This method works in correlation with the next one, Method 3, wherein you first follow the steps given here to recover your lost files from the USB, and then move on to the next procedure to convert the drive to NTFS in order to make it secure so it doesn’t come up with any security issue again.

When talking about recovering the lost files, even though there are several data recovery tools available in the market today, the most trusted one that also simplifies the entire process is Wondershare Recoverit.

The software works in real-time where it automatically detects any new drive that is connected to the computer and then allows you to scan it for the deleted or lost files. In addition, the program has a special option specifically dedicated to the movie files that lets you repair corrupt videos to fix their damaged or missing audio.

The steps are given below explain how to use Wondershare Recoverit to recover your data from a slow USB drive:

Step 1: Select the USB Drive and Begin Scanning

Connect the faulty thumb drive to any of the USB ports on your computer running Windows 10, launch Wondershare Recoverit, select the radio button representing the USB drive from the External Devices section, and click Start from the bottom-right corner of the interface.

fix mp4 files

Step 2: Check the Preview and Recover Data

On the next window, wait while Wondershare Recoverit completes the scanning process, and click Got it on the confirmation box that appears. Next, go to the File Type tab from the top of the left pane, check all the boxes the pane has, and click Recover from the bottom-right corner of the window to recover all the lost and/or deleted files.

scan completed

Step 3: Repair and Recover Videos (Optional/Alternate Solution)

On Wondershare Recoverit’s main window, select the Video Repair radio button from the Advanced Recovery section, click Start, click Add Video from the center of the right section of the next window, and use the File Dialog box to locate, select, and add a corrupt video that your USB drive has. Next, click Repair from the bottom-right corner, and when the process completes, click OK on the completion box. Now, click Save All from the bottom-right corner to save the repaired video to your hard drive. Optionally you can click the Play icon from the Operation column to preview the video to check its integrity before saving.

video repair

add video

After you have successfully recovered your data and/or the videos, you can safely proceed to the next method to continue improving the performance of your flash drive.

video repair completed

Method 3: Formatting the Drive

Although this approach should be taken as the last resort, i.e. when all the solutions fail to help, in this scenario, the process works in correlation with Method 2.

Note: Following the steps given below erases all the data from the USB forever and for good. Therefore, regardless of the transfer speed you get from your faulty drive, make sure to back up the important files, and then proceed further:

Step 1: Get to the Drive Format Box

Connect the faulty USB drive to your PC (a Windows 10 computer is used here for illustration), click File Explorer from the taskbar, right-click the flash drive’s icon from the navigation bar on the left and click Format.

format usb

Step 2: Select File System

Choose your preferred file system from the File system drop-down list. Note: Default is FAT32 but you can choose NTFS to enable file and folder level security on the drive.

fat32 system

Step 3: Format the Drive

Check the Quick Format box from the Format options section, click Start from the bottom, and on the system warning box, click OK to begin the formatting process.

format settings

format new warning

Wait while Windows 10 successfully formats the drive, and click OK on the Format Complete information box that appears post completion. Back on the Format box, click Close and continue using the USB drive normally.

format completed

close format new

Method 4: Update Drivers

It is usually the chipset and disk drivers that are the main culprits for the degraded performance of your thumb drive, and updating them to the latest version resolves the issue most of the time. The step-by-step procedures for updating both the device drivers are given below:

Section 1: Update Chipset Driver

Step 1: Get to Device Manager

Assuming that you are using Windows 10 and that the USB drive in question is connected to the computer, right-click Start, and click Device Manager from the context menu.

get  to device manager

Step 2: Update Chipset Driver

Expand System devices, right-click Intel(R) 300 Series Chipset Family LPC Controller (depending on the model of your PC and the motherboard it has, this name may vary), click Update driver from the context menu, click Search automatically for updated driver software on the next box that comes up, and let Windows search for the latest driver. Once found, you can follow the on-screen instructions to install the new chipset driver for your computer. Close all the boxes when done, and restart the PC to allow the modifications to take effect.

update driver

Section 2: Update Disk Driver

Step 1: Get to Device Manager

Connect your USB drive to the computer, and follow the process explained in Step 1 of the previous section to get to the Device Manager snap-in.

Step 2: Update Disk Driver

Expand Disk drives, right-click the USB drive from the available list, click Update driver, and on the next box, click Search automatically for updated driver software. Follow the on-screen instructions from there to update the disk driver.

update driver

search driver

Method 5: Optimization

Another method you can try to improve your flash drive’s speed is by configuring it to offer better performance rather than allowing you to disconnect it from the computer merely by plugging it out from the port. You can follow the steps given below fix if USB transfer speed slow:

WARNING: This process requires you to restart Windows. Therefore, to avoid losing any important data, make sure that you have saved all your work and have closed all the running applications before proceeding.

Step 1: Go to Device Manager

Confirm that the USB drive is connected to the computer, right-click the Start button, and click Device Manager.

Step 2: Get to the Drive’s Properties Box

Expand the Disk drives tree, right-click your USB drive, and click Properties from the context menu.

usb properties

Step 3: Optimize the Disk

Go to the Policies tab, select the Better performance radio button, click OK, and on the System Settings Change box, click Yes to restart your computer.

enable better performance

Method 6: Check BIOS/Firmware for USB 3.0

This method requires you to enter into your motherboard’s BIOS or UEFI (Unified Extensible Firmware Interface). Depending on the manufacturer and the architecture of the board, the process of checking for and enabling USB 3.0 may vary. Nevertheless, regardless of the screens and the name of the options that your computer’s BIOS/Firmware has, the basic principle remains the same. The following instructions explain how to enable USB 3.0 on your computer.

Step 1: Go to the Motherboard’s BIOS/Firmware

Earlier you could enter the BIOS setup by pressing the Del key repeatedly right after powering on your computer. However, the new PCs have different keys to take you there. For some it is F12, for others it is F10, and for a few of them, it is even the Esc key. Therefore, you may need to check the manufacturer’s website or your PC’s Owner’s Manual to find out the correct key or combination of keys to get to the Firmware or BIOS window of the motherboard.

Step 2: Enable USB 3.0

Use the left and right arrow keys on your keyboard to get to the Advanced tab, use the up and down keys to select USB Configuration (or something similar to this), and press Enter. On the next screen, use the arrow keys again to select USB 3.0 (or 2.0) Support, press Enter, select Enabled or USB 3.0 (whatever option is available to enable USB 3.0), and press Enter again.

Step 3: Save the Changes and Restart

Press F10 and then press Enter to save the settings and restart the PC. In some computers, you may need to go to the Exit tab and pick Save and Restart (or any other similar option) to exit the setup saving the changes.


If you notice USB copying speed slow, before starting with the troubleshooting, scan the drive with a strong antivirus program and see if the performance improves after that. If the issue persists, any of the solutions discussed above would help. However, if you are looking for an easy way to rectify the problem, you can jump right on to Method 2 to use an efficient tool, Wondershare Recoverit that is worth a try.

Related FAQs

1. How long does it take to scan a flash drive?

The time it takes to scan a USB drive depends on several factors such as the type of antivirus program or scanning tool you are using, the amount of RAM your PC has, the capacity of the drive you are performing the scan on, and the number of files there are to be scanned. Ideally, a 16GB USB drive with some errors and a couple of hundred files roughly takes around 20 minutes to 45 minutes to scan.

2. How can I check whether my data is recoverable or not before purchase?

While using a genuine and efficient tool like Wondershare Recoverit, you can notice that it has a Preview window in the right pane. After scanning, if the preview of the media content is available, it means that the app can access the file, and it's safe to purchase a licensed copy of the program for full data recovery.

3. How many file types can Wondershare Recoverit recover?

Wondershare Recoverit supports more than 1000 file formats and is capable of recovering almost all file types from practically all file systems including FAT32, NTFS, APFS, and HFS+.

Recoverit author

Theo Lucia

chief Editor

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